I've corrected the metadata for this book. (We had been given an incorrect LCCN identifier for the book, which led us to obtain the wrong catalog record from the Library of Congress.) The metadata now match the images.
Unfortunately, we don't have access to a copy of Mes entretiens avec Frédéric le Grand
by De Catt, in French. You may be able to find one at a library near you through WorldCat, here